imām — this vidyām — prayer purā — formerly kaścit — someone kauśikaḥ — Kauśika dhārayan — using dvijaḥ — a brāhmaṇa yoga-dhāraṇayā — by mystic power sva-aṅgam — his own body jahau — gave up saḥ — he maru-dhanvani — in the desert.